Samsung DDR4 8GB 2666MHz PC4-2666V-UA2-11 1Rx8 Memory M378A1K43CB2-CTD is a UDIMM RAM module with a total capacity of 8GB each. It has a bus speed of 2666MHz and features non ECC memory. This module comes in a single 288PIN design and weighs 1lb. It is suitable for use in computers and similar devices.